<template>
  <div>
    <table border="1" width="700" style="border-collapse: collapse">
      <caption>
        购物车
      </caption>
      <thead>
        <tr>
          <th><input type="checkbox" v-model="isAll" /> <span>全选</span></th>
          <th>名称</th>
          <th>价格</th>
          <th>数量</th>
          <th>总价</th>
          <th>操作</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="(item, index) in goodList" :key="index">
          <td><input type="checkbox" v-model="item.checked" /></td>
          <td>{{ item.name }}</td>
          <td>{{ item.price }}</td>
          <td><button @click="add">+</button>{{ item.num }}<button>-</button></td>
          <td>{{ item.price }}</td>
          <td><button>删除</button></td>
        </tr>
      </tbody>

      <tfoot>
        <tr>
          <td>合计:</td>
          <td colspan="5"></td>
        </tr>
      </tfoot>
    </table>
    <button @click="fn">按钮</button>
  </div>
</template>

<script>
import { mapState } from "vuex"
import { mapMutations } from "vuex"
export default {
  computed: {
    ...mapState(["goodList"]),
    isAll: {
      set(el) {
        this.goodList.forEach((obj) => (obj.checked = el))
      },
      get() {
        if (this.goodList.length === 0) {
          return false
        }
        return this.goodList.every((obj) => obj.checked === true)
      },
    },
  },
  methods: {
    fn() {
      console.log(this.$store.state.goodList)
    },
    ...mapMutations(["add"]),
  },
}
</script>

<style></style>
